Gunmen ambushed a convoy of passenger vehicles traveling in remote northern Pakistan, killing dozens of people, authorities said. The gunmen had been hiding in the mountains of Khyber Pakhtunkhwa province's Kurram district and fired on the convoy of some 200 passenger vehicles,

The attack happened in Kurram, where clashes between majority Sunni Muslims and minority Shiites have killed dozens of people in recent months.

At least 38 people, most of them Shiite Muslims, were killed in northwestern Pakistan on Thursday as gunmen ambushed convoys of vehicles that had been under the protection of security forces. The attack was one of the deadliest in months of sectarian violence in the Kurram region, a scenic mountainous district bordering Afghanistan.